Galaxy S2 shutting off in idle mode

Galaxy S2 shutting off in idle mode

Recently, I noticed that my phone shuts off while in sleep mode. This just happens when I don't check it for a while and the display is turned off. When I do go to check my phone, it's unresponsive, even if I hold down the power button. So far, I've had to remove the batter every time this has happened in order to reboot it.

I just don't get what the issue is. I'm probably missing phone calls because I'm not even aware that my phone is turning off. I feel like after the ICS update my phone has had issues. I already performed a factory reset last week since I was having a problem with the notifications not ringing and vibrating, and now, this is happening on top of that.

If anyone has any suggestions, that would be greatly appreciated.

I have a Samsung Galaxy S2 i777.

Oh, and another thing, I noticed that my batter is at 95-100% before it shuts off by itself, and once it boots up again it's down to 85-89%. I also feel like it might be an issue with overheating: I noticed that my phone feels hot after I've been using it for a while, like texting or using the internet, and then I set it down to do other stuff when I notice that it's turned off. My phone usually feels really hot too, and the case I have for my phone probably does not help either.

Re: Galaxy S2 shutting off in idle mode

@ablan59 wrote:Linda Jo, the only real fix seems to be wiping the phone and rolling back to 4.0.3. Mine has worked perfectly for 6 days now. Not a single restart. Battery life has been decent, I start using mine at 6:30am and all this week by 10:30pm I was still usually around 30%. Last night it was 15% but I had some heavy use. Depends on how much I use it which is usually a lot since Its my work phone too.

How you get back to 4.0.3 is the major problem. I've read that some have gotten the AT&T repair centers in their town to do it, Most have had to do it themselves. We shouldn't have to resort to this though, but right now I'm pretty happy with my phone again. You don't have to root the phone to do this but it is pretty technical.

Thanks for that feedback ablan59. I have a repair center that I can get to, but I am really reticent to wipe my phone and set it up again. It's taken quite a long time to cusomize EVERYTHING after the last wipe a few months ago :-)

The other trade-off - I'm afraid if I have to reinstall all of my downloaded apps, I'll end up with all of the updates to the apps I chose not to update because they got such bad reviews.

Re: Galaxy S2 shutting off in idle mode

I feel your pain. If the repair center will do the roll back on the rom, they may have a way to copy all your stuff back over but not sure. The apps do stay on Google Play so even when they are wiped, you only have to reinstall the ones you want and they will be the latest version. Contacts can be backed up on Kies or I have all of mine sync with my Gmail too. If rooted, Titanium Backup can do all of this I am told. Good luck!

Re: Galaxy S2 shutting off in idle mode

Like everyone else, I've been suffering with the sleep of death. This morning I took my phone off the charger and noticed what appeared to be yet another SOD power off. As standard practice, I held down the power button until it restarted and headed off to work. I pulled out my phone a little later and noticed the home screen had frozen. Judging by the clock widget, it had been that way for a little more than 30 mins. Again I held down the power button and waited for it to restart, only this time the screen just went black. Now I cannot get the phone to power on no matter what I do: remove battery, let charge via wall plug, swapped batteries with another phone, etc.. I am not sure what else to try. Any ideas or is my phone bricked? All of this with the ' *official* 4.0.4. What a joke...

4. Uninstalled updates, cleared data and then disabled all ATT apps like Att Smart wifi, code scanner,family map, hot spots navigator, Qik lite, social hub, google play books magazines movies and tv and google+, Live TV , Movie hub. i dont use any of those apps anyways. Also delete any apps you don't use. Why have them if you dont need them.

I can't think of anything else I did. I havent had a SOD for over a week now!

Re: Galaxy S2 shutting off in idle mode

I tried everything to fix the SOD's on 4.0.4, and concluded it is not possible. Don't have time to wait for AT&T/Samsung to fix it - very disappointed in them.

I've had the SuperNexus ROM running for week now, and it is wonderful! The phone runs better than it ever has: absolutely stable, and everything just works. No crapware, just Nexus jelly bean goodness.

I'm using the SuperNexus ROM (JB 4.1.2, build 5, not the newest one with JB 4.2.1. The newer one seems to be working through a couple of issues, and I just need reliability.

It was a little stressful for this amateur to learn and complete the root/ROM process, but well worth it. Guess I can at least thank AT&T for forcing me to learn to hack my phone.

Re: Galaxy S2 shutting off in idle mode

I tried everything to fix the SOD's on 4.0.4, and concluded it is not possible. Don't have time to wait for AT&T/Samsung to fix it - very disappointed in them.

I've had the SuperNexus ROM running for week now, and it is wonderful! The phone runs better than it ever has: absolutely stable, and everything just works. No crapware, just Nexus jelly bean goodness.

I'm using the SuperNexus ROM (JB 4.1.2, build 5, not the newest one with JB 4.2.1. The newer one seems to be working through a couple of issues, and I just need reliability.

It was a little stressful for this amateur to learn and complete the root/ROM process, but well worth it. Guess I can at least thank AT&T for forcing me to learn to hack my phone.

Re: Galaxy S2 shutting off in idle mode

Go into settings menu and ckick applications,click the all tabfind the clock app, the one that come defualt on s2, not one from play storethere will be 2 entries of the same clock appboth have a disable buuton, but one may be greyed out.click the disable button on the clock app were it is active, then go to other clock app and click clear datanow reboot phone.

It appears that the update caused a 2nd appearance of the clock app, causeing havoc and and worlwide hysteria.

Re: Galaxy S2 shutting off in idle mode

Without doing anything different to my phone, suddenly it is auto-syncing again with my home bluetooth and no SOD for the last several days. Battery is also draining at a "normal" rate again. Anyone else notice sudden improvements?

I did what angeleye50 said to do too, just in case that improves things too.

I'll update again in a few days to see if everything is still working well.

Re: Galaxy S2 shutting off in idle mode

Wow, my phone stayed at 100% for 4 hours while in standby mode and is still at 98% at 5 hours. I did not do anything different than any other day when the battery would be down to the low 80's% or worse by now, except disable the one clock this morning that angeleye50 recommended.